Facebook has been testing the “App Lock” feature for its Messenger app for sometime now, and today the feature is rolling out to Facebook Messenger app on all iOS devices. After this update, Messenger app can be locked using Touch ID or Face ID to get extra privacy for your Messenger chats.
The option can be turned on and off under Profile > Privacy > App Lock. You will have 4 options for the App Lock. You can set the option to lock the Messenger app immediately after you swipe away from the app or set to it lock the app after 1min/15mins or 1 hour.
The “App Lock” feature is already available on other popular messaging app “WhatsApp”. At this time, the “App Lock” on Facebook’s Messenger is only available on iOS devices including iPads and Facebook is planning to roll out this feature to Android devices in the near future.